4.85 carat Lightning Ridge doublet pear - top grade with thick layer of crystal on top n1 black opal
 
Stunning gem grade Lightning Ridge doublet, excellent pattern of blue and green fire. 
 
Mine - Lightning Ridge Doublet
Body Tone - N1 crystal top
Brightness - 5/5
Fire colour - Blue Green
Size - 16x11x4mm
Weight - 4.85 carats
 
Price is per stone
 
About Opals
 
Treatment: Natural
Color: Black, White, Blue, Green, Red, Yellow, Pink, Grey, Purple, Orange, Brown
Luster: Pearly, Vitreous, Opalescence
Birthstone zodiac sign: Libra
Associated month: October
Crystal system: Amorphous solid
Chemical formula: SiO₂·nH₂O
Hardness (Mohs hardness scale): 5.5 – 6.5
Country of origin: Australia, Ethiopia, Mexico and Cornwall amazingly 
Size variations: can vary 0.3mm each way on all dimentions given
 
Properties:
 
In mystical circles, opal is considered a stone representing hope, innocence and purity. It has strong connotations of happiness, faithfulness, loyalty and confidence.  Regarded as a powerful sea stone for safty on the water.
 
All orders are sent recorded delivery UK and International.